Sheldon gives his usual triple knock.

"Come on in honey" Penny is over in the kitchen area fixing a drink. "Want a drink?" She holds up a bottle of ice tea, fresh from the refrigerator.

He nods and she brings it to him, and he's taking her in his arms as if it was the most natural thing in the world. He still worries in his more anxious moments that his phobias will return, sometimes the thought of not being able to hold her makes him sick with worry. But for now she feels safe and happy and right in his arms, so he hugs her and she hugs him back.

"so, how was work?"

"Very productive. Working with Raj I've put together an experiment to run on the LIGO that should help me with the gravimetric string problem."

"sounds good. That going to prove the knotting or rolling thing?"

"It should, if I am correct, prove the existence of the rolling interactions"

"Cool. Oh, You got another package - your name, my address, so something fun?" She points to it on the shelf by the door.

"you tell me" he says, handing her the package. He knows she loves unwrapping things.

She unwraps it with her usual enthusiasm, all but destroying the packaging to get in. The box inside has bright colours and a clear plastic front. She makes an appreciative "ooh" and grins. "A new toy?"She reads the label "The fun factory butt plug with jiggle balls" turns it over " for the intermediate user. Tapered tip for easy insertion. Oh My!"

She opens the packaging "you think I'm ready for Intermediate toys then?"

"I felt you'd enjoy the extra stimulation"

The new toy is a black rod about 5 inches long from rounded silicone tip to the crossbar at the base. Instead of being straight it has two large round bulges, the first about an inch wide and the second a little wider.

"Well, its soft but firm, nice and flexible." She bends it and feels something in it move a little.

"Oh!" Curious she flexes it again, feeling it shift. She shakes it and it rattles Clickclickclick. "the bulges have little weights that move! Cunning."

She grins over at Sheldon. "Can I try it now? Where is the lube?"

"In the Drawer by the bed"

She rushes for the bedroom, grabs the lube and heads into the bathroom.

Sheldon watches her go with a grin on his face. He's judged it well, a balance between stimulation and curiosity. Opening his laptop he starts to go over the simulation again.

In the bathroom Penny strips down and stands naked in front of the mirror. Something about toys like this was a delightfully naughty turn on.

She rinsed the plug under the tap then squeezed a good blob of lube onto the end. Working it with her fingers she made sure the whole thing was nice and slippery. Looking round the bathroom to get the best pose she put on leg up on the side of the bath, bending back to see her ass in the mirror.

Using her free hand she gripped her ass and spread her ass wider, pressing the tip of the plug to her asshole.

she gently pressed, feeling it push in and stretch her open. A shudder of pleasure runs up her spine.

She pushed slowly, feeling her ass stretch for the first bulge then grip and slide the plug in.

Using her free hand she stroked her breast, feeling her nipple get hard. It was crazy but this was a turn on, especially with Sheldon in the other room knowing what she was doing. She slid her free hand down and found her clit, slowly rubbing it with two fingers as she worked the plug back and forth.

Great, I'm an anal slut. She laughs to herself. Sheldon's little anal slut. why is that idea such a turn on?

But really Its More than that, not just her ass. its showing off for Sheldon, being sexy. Being wanted. Stronger than that; Being Desired. That was the real turn on. She's got it bad and she knows it. maybe He'll have to brand his initials on her ass next to show she's his. She feels a sudden throb of desire like a punch in the gut. Holy Fuck, where did that thought come from?

She pushed the plug all the way in, feeling her ass tighten round the narrow stem.

Straightening up she wiggled her hips, Felt the weights shift as she moved. Her insides did a tight little quiver. It really is a turn on.

She grabs a cut off t-shirt and cure shorts from the laundry pile and slips them on.

Standing in the door of the bedroom she grins over at Sheldon who's sitting on the couch, busy on his laptop.

She heads over to hers on the table and pulls up her playlist. The Divinyls 'I touch myself' starts to play through the rooms wireless speakers.

She starts to Dance round her apartment. "Ok, this is my favourite plug of the lot." She wiggles her hips side to side and giggles. The chorus comes on and she wiggles her way over to Sheldon, who puts his laptop aside and sits legs astride. Standing right in front of him she dances on the spot, singing along.

"I don't want anybody else"

She points at Sheldon and grins,

"When i think about you I touch myself"

She runs her hands over her breasts, lifting her shirt over her head, turning around slowly

"Ohhh" she hooks her fingers in her waistband and slowly slides her shorts down.

"Ohhh" shifting her weight from side to side she walks her shorts down, bending with them to give Sheldon a clear view of her ass and the plug inside her

"Ahhh" she steps free of her shorts and turns back to face him

"Ah ah ah ahh" She puts both hands down between her legs, stroking herself, then runs them up her body, from her hips, to her stomach, to her breasts, blowing him a kiss then raising her arms over her head, legs apart and head back. "I forget myself, I want you to remind me."

She looks at him eagerly "We green?"

he beckons her to come to him, nodding "Green"

"Good. I want to feel what its like with you and it in me at once "

She unbuckles his belt, easing his pants down. His erections full and ready, she straddles him , wrapping her arms around his neck as she lowers herself down onto him.

The head of his cock slides across the slick folds of her then slides into her. he puts his hands on her hips and lets her rock back and forth, He can feel how excited she is, and the hard length of the plug inside her, the weights moving as she moves.

Double penetrated, she starts to move slowly but the feeling drives wild, she starts to buck her hips, pushing herself up then driving down onto him, faster and faster.

He can feel the urge building in him, a hunger to take her, to come deep inside her. She's moving faster now, breath coming in gasps as she rides him, but it's not enough. As he builds to a crescendo he sits up, wrapping his arms around her and driving her down as he thrusts up with his hips, holding her to him as he thrusts. She cries out, face buried in his shoulder as she suddenly looses herself, orgasming helplessly in his arms as he thrusts and pumps frantically into her.

They slump back onto the sofa, sated. She stays astride him, his shrinking cock still inside her as they kiss.

"So, a good new addition to the toy box?"

"Oh, definitely" she smiles